1000：

Description

Your task is to Calculate a + b.

Input

Input contains multiple test cases. Each test case consists of a pair of integers a and b（0<=a,b<=20）, separated by a space, one pair of integers per line.

Output

For each pair of input integers a and b you should output the sum of a and b in one line, and with one line of output for each line in input.

Sample Input

1 1

Sample Output

2

程式碼：

#include<iostream>
using namespace std;
 
int main()
{
    inta, b;
    while(cin >> a >> b)
    {
        cout << a + b << endl;
    }
    return 0;
}

1001：

Description

Your task is to Calculate a + b.

Input

There are multiple test cases. Each test case contains only one line. Each line consists of a pair of real number a and b（0<=a,b<=1000000）, separated by a space.

Output

For each case, output the answer in one line rounded to 4 digits after the decimal point.

Sample Input

1 510 200.1 1.5

Sample Output

6.000030.00001.6000

#include<iostream>
using namespace std;
 
int main()
{
    double a, b;
    while(cin >> a >> b)
    {
        printf("%.4f"
 
,a+b);
        cout <<  endl;
    }
    return 0;
}

Description

Your task is to Calculate a + b.

Input

There are multiple test cases. Each test case contains only one line. Each line consists of a pair of integers a and b（1=< a,b <=1016）, separated by a space. Input is followed by a single line with a = 0, b = 0, which should not be processed.

Output

For each pair of input integers a and b you should output the sum of a and b in one line, and with one line of output for each line in input.

Sample Input

1 5
10 20
10000000000000000 10000000000000000
0 0

Sample Output

6
30
20000000000000000

程式碼：

#include<iostream>
using namespace std;
 
int main()
{
    long long a, b;
    while(cin >> a >> b)
    {
        if(a == 0 && b == 0)break;
        cout << a + b<<endl;
    }
    return 0;
}